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Create Undo button
Message
 
To
15/10/1998 17:33:45
Dragan Nedeljkovich (Online)
Now officially retired
Zrenjanin, Serbia
General information
Forum:
Visual FoxPro
Category:
Windows API functions
Miscellaneous
Thread ID:
00146106
Message ID:
00147315
Views:
32
>The way to go. We may need an .PrevValues[n] property array in that class, increase its dimension in each InteractiveChange, and step back in Undo - like
>
>This.Value=this.Undo.PrevValues[this.Undo.LastValueIndex-1]

I think you'd need more than this, actually. For example, after undoing a change, you want to also change the cursor position, what text is selected, etc.

I'd go with a Command class, as described in "Design Patterns."
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